Paul is a physicist, observing the movement of a charged particle. The particle is moving in a straight line along the y-axis of an x-y plane. Its initial
velocity was –3 m/s, and its final velocity was 6 m/s. At the end of Paul's
observation, the particle's displacement was 3.75 meters in the positive
direction. How long was Paul observing the particle's motion?

A) 2.5 seconds

B) 5.6 seconds

C) 1.2 seconds

D) 4.2 seconds

Pl help me

The answer is a i think

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

It would be c hope this out